Self-secured bundle of flexible material.



No. 819,858. PATENTED MAY 8. 1908v J. F. CRAFT. SELF SECURED BUNDLE OP FLEXIBLE MATERIAL.

APPLICATION FILED MAY19, 1905.

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UNITED STATES PATENT OFFICE.

JAMES F. CRAFT, OF LINCOLN, MAINE.

Specification of Letters Patent.

Patented May 8, 1906.

Application filed May 19,1905. Serial No. 261,165.

To all whom it may concern.-

Be it known that I, JAMES F. CRAFT, of Lincoln, in the county of Penobscot and State of Maine, have invented certain new and useful Improvements in Self-Secured Bundles of Flexible Material, of which the following is a specification.

The object of the present invention is to provide a novel form of package or bundle into which sheets or strips of flexible compressible material, such as wood-pulp, may be made and retained against accidentally coming apart without the necessity of external wrappings of string, cord, or other bindmg means.

The invention has particular reference to sheets of dried wood-pulp constituting the rough product of the pulp-mill as they come from the mill, and is designed to afford provision by which they can be securely made into bundles or rolls preparatory to shipment to paper-mills in which the wood-pulp is formed into paper; and it consists of the bundle having the provisions for securing the same, hereinafter described and claimed, and illustrated in the accompanying drawings, in which- Figure 1 represents a perspective view of a sheet or strip of dried pulp made into a bundle having the form of a roll and secured in such form in the manner contemplated by this invention. Fig. 2 represents a cross-section of such a roll. Fig. 3 represents a view similar to Fig. 1, showing the integral tongues formed upon the outer convolutions of the roll before they are tucked under the next inner convolution. Fig. 4 represents a sectional View showing the modified form of bundle.

The same reference characters indicate the same parts in all the figures.

The product of wood-pulp mills is in the form when dried 01 long sheets or wide strips of heavy coarse fibrous material, similar to a rough grade of porous paper. From the pulp-mill this product is shipped to papermills to be finished into paper, and in order to In 1 practicing my invention after the sheets have 1 permit shipment it is formed into rolls.

been made into the rolls a I form integral tongues b on the outer layer or convolution a of the roll by cutting the same, making converging slits which form the sides and end of the tongue, leaving the base integrally attachedto the strip. The cuts are made deep above referred to, since any flexible, comenough, so that they not only penetrate the outer layer, but also extend through the adjacent layer within, forming therein similar tongues inalinement with the tongues I). These tongues in the inner convolution or ply of the roll are removed, leaving recesses c, after which the tongues are passed through the openings 0 and doubled backwardly around the edges 0 of such openings adjacent the base portions of the tongues, being tucked between layers of the roll beneath the outer layer. The portions of the end of the rolled-up strip between the tongues are then removed, so that no projecting corners will be left capable of being accidentally caught and torn away, so as to tear off the tongues and allow the package to become unrolled. In addition to the tongues 11 on the extreme end of the rolled-up strip other tongues b may be formed similarly at other points upon the external surface of the roll and similarly passed beneath one or more of the inner convolutions. This manner of securing the parts of a package is capable of being employed when the sheets are formed in other shapes than in that of a roll, as shown in Fig. 4, where the pulp-sheet is doubled and folded back and forth to make a bale d, the end portion a being extended and wrapped about the bale and tongues b, formed in the manner described, being similarly passed under the adjacent plies d of the bale inclosed within the enveloping end a of the strip.

The manner of securing the end of the strip to the bundle provides a very efficient fastening which cannot be undone by any accidental circumstance and one which can also be very easily and quickly formed with no more labor than is necessary to tie up the bundle with cord or other fastening, while it is more secure than any such other fastening and also saves the expense required to provide such external fastenings. The roll is composed of a large number of closely-wound convolutions, so that it is stiff or relatively rigid. The outer convolutions are therefore firmly supported by the stiff inner or body portion of the roll, so that the tucked-in tongues are caused to indent the compressible surfaces between which they lie, and are therefore so firmly grasped or clamped by said surfaces that there is no liability of the accidental withdrawal of the tongues, no glue or other fastening means being required. It is obvious that this method of securing bundles is not confined to material of the kind pressible, and reasonably strong material may equally well be thus self-secured, and I therefore desire it to be understood that I intend to embrace under my invention a pack age secured in the manner indicated made of any material whatever possessing the necessary qualities of flexibility and toughness.

I claim 1. An article of manufacture consisting of a strip of flexible, compressible material formed into a stiff roll, a ton ue formed on the outermost. convolution o the roll, the next adjacent convolution having an opening, and the tongue being passed through the opening, tucked under the adjacent convolution, and caused by the stiffness of the roll to indent the adjacent surfaces between which it lies.

formed on one convolution extended through an opening in the adjacent inner convolution, and doubled back and extended under such inner convolution, the said tongue indenting the adjacent surfaces between which it lies.

4. A self-secured package of flexible, compressible material consisting of a strip of such material gathered into a compact stiff bundle surrounded by an integral enveloping portion of the strip, a tongue formed integrally on said enveloping portion and passed through a registering opening in an adjacent interior portion or ply of the package, being turned backwardly under said interior portion, the said tongue being caused by the stiffness of the body to indent the adjacent surfaces between which it lies.

5. A self-secured package of flexible, compressible material consisting of a strip of such material gathered into a compact stiff bundle surrounded by an integral enveloping portion of the strip, a tongue formed integrally on said enveloping portion and passed through a registering opening in an adjacent interior portion or ply of the package, the tongue and opening being formed simultaneously by converging slits cut in the outer surface of the package, and the tongue doubled upon itself and tucked under said .adj acent portion, the tongue being caused by the stiffness of the body to indent the adjacent surfaces between which it lies.

In testimony whereof I have aflixed my signature in presence of two witnesses.

JAMES F. CRAFT.

Witnesses:

BERNARD R. ADAMS, OHAs. S. LINDSAY. 

